From automobiles, to sports equipment, medical and aerospace systems, many products use a plastic called polyurethane. Mononitrobenzene (MNB) is an intermediate in the synthesis of polyurethane. In fact, MNB is the first step in the polyurethane manufacturing chain. MNB is converted to aniline, which is subsequently used to produce Methylene Diphenyl Diisocyanate (MDI). MDI is copolymerized with various polyols to form polyurethane.
NORAM is the world's leading supplier of MNB plants. Today, more than half of the world's MDI-based polyurethane supply is synthesized from MNB produced in plants using NORAM's patented process and patented Electrophilic Reactor.
A decanter is used to separate the organic and acid phases. The spent acid is reconcentrated in a Sulphuric Acid Flash Evaporator (SAFE). Energy requirements for the process are met largely by the heat of reaction, supplemented by pre-heating the benzene and nitric acid feeds with waste heat.
The crude product is taken to downstream facilities for purification. These treatments involve both standard and proprietary procedures for washing and benzene stripping.
NORAM also offers technology for nitration wastewater treatment.
Key Features and Benefits
• A beneficial and quantifiable adjustment to the course of the basic process chemistry, which improves conversion
Select Operators of the NORAM MNB Technology